Chiptuning GMC Sierra 6.6 Duramax 397 hp

for common rail engine

Chiptuning GMC Sierra 6.6 Duramax 397 hp Racing Box, the best for your diesel common rail car. You can increase power and toque thanks to the technology of the Racing Box chiptuning. Slow overtakes, continuous gear changes and high consumptions will no longer be a problem:

PERFORMANCE

Standard

Racing Box

Power

397 hp

455 hp

Torque

Standard

up to +40%

Consumptions

Standard

up to -15%

Speed

Standard

Standard

Acceleration

Standard

Standard

MAPPINGS

The chiptuning is sold already programmed and adjusted to your engine. If you wish you can change the power thanks to the controls in the device, by choosing one of 10 different settings.

Delivery of your chiptuning fast and guaranteed.

We entrust the shipments of our chiptunings only to the best couriers.

Racing Box is not only quality, technology and innovation. We know that each customer after the purchase, would like to receive as soon as possible his Racing Box. Precisely for this reason we offer to our customers the following services:

Express service

If the order is placed by 14:00 (Italian time), the package leaves the factory the same day.

Shipping Tracking

Traceability of your shipment in real time; through your email, you can check online where is your Racing Box chiptuning.

Insured delivery

We guarantee the certainty of receiving your order. If the carrier were to lose your delivery, we will send immediately another chiptuning.

Our couriers

We entrust shipments of our chiptunings only to carriers with maximum efficiency.